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Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-ufs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-ufs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index 5fa6655aee84..ae0191295d29 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -1559,3 +1559,48 @@ Description: Symbol - HCMID. This file shows the UFSHCD manufacturer id. The Manufacturer ID is defined by JEDEC in JEDEC-JEP106. The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/critical_health +What: /sys/bus/platform/devices/*.ufs/critical_health +Date: February 2025 +Contact: Avri Altman <avri.altman@wdc.com> +Description: Report the number of times a critical health event has been + reported by a UFS device. Further insight into the specific + issue can be gained by reading one of: bPreEOLInfo, + bDeviceLifeTimeEstA, bDeviceLifeTimeEstB, + bWriteBoosterBufferLifeTimeEst, and bRPMBLifeTimeEst. + + The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/clkscale_enable +What: /sys/bus/platform/devices/*.ufs/clkscale_enable +Date: January 2025 +Contact: Ziqi Chen <quic_ziqichen@quicinc.com> +Description: + This attribute shows whether the UFS clock scaling is enabled or not. + And it can be used to enable/disable the clock scaling by writing + 1 or 0 to this attribute. + + The attribute is read/write. + +What: /sys/bus/platform/drivers/ufshcd/*/clkgate_enable +What: /sys/bus/platform/devices/*.ufs/clkgate_enable +Date: January 2025 +Contact: Ziqi Chen <quic_ziqichen@quicinc.com> +Description: + This attribute shows whether the UFS clock gating is enabled or not. + And it can be used to enable/disable the clock gating by writing + 1 or 0 to this attribute. + + The attribute is read/write. + +What: /sys/bus/platform/drivers/ufshcd/*/clkgate_delay_ms +What: /sys/bus/platform/devices/*.ufs/clkgate_delay_ms +Date: January 2025 +Contact: Ziqi Chen <quic_ziqichen@quicinc.com> +Description: + This attribute shows and sets the number of milliseconds of idle time + before the UFS driver starts to perform clock gating. This can + prevent the UFS from frequently performing clock gating/ungating. + + The attribute is read/write. |